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From: Jakob Bornecrantz <jakob@vmware.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH] drm: stop vmgfx driver explosion
Date: Mon, 20 Aug 2012 08:04:05 -0700 (PDT)	[thread overview]
Message-ID: <790319256.19256264.1345475045195.JavaMail.root@vmware.com> (raw)
In-Reply-To: <20120820144438.6255.39723.stgit@localhost.localdomain>

----- Original Message -----
> From: Alan Cox <alan@linux.intel.com>
> 
> If you do a page flip with no flags set then event is NULL. If event
> is NULL then the vmw_gfx driver likes to go digging into NULL and
> extracts NULL->base.file_priv.
> 
> On a modern kernel with NULL mapping protection it's just another
> oops, without it there are some "intriguing" possibilities.
> 
> What it should do is an open question but that for the driver owners
> to sort out.
> 
> Signed-off-by: Alan Cox <alan@linux.intel.com>

Thanks Alan!

Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>

I think CC stable is in order.

Cheers, Jakob.

WARNING: multiple messages have this Message-ID (diff)
From: Jakob Bornecrantz <jakob@vmware.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] drm: stop vmgfx driver explosion
Date: Mon, 20 Aug 2012 08:04:05 -0700 (PDT)	[thread overview]
Message-ID: <790319256.19256264.1345475045195.JavaMail.root@vmware.com> (raw)
In-Reply-To: <20120820144438.6255.39723.stgit@localhost.localdomain>

----- Original Message -----
> From: Alan Cox <alan@linux.intel.com>
> 
> If you do a page flip with no flags set then event is NULL. If event
> is NULL then the vmw_gfx driver likes to go digging into NULL and
> extracts NULL->base.file_priv.
> 
> On a modern kernel with NULL mapping protection it's just another
> oops, without it there are some "intriguing" possibilities.
> 
> What it should do is an open question but that for the driver owners
> to sort out.
> 
> Signed-off-by: Alan Cox <alan@linux.intel.com>

Thanks Alan!

Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>

I think CC stable is in order.

Cheers, Jakob.

  reply	other threads:[~2012-08-20 15:04 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-20 14:44 [PATCH] drm: stop vmgfx driver explosion Alan Cox
2012-08-20 15:04 ` Jakob Bornecrantz [this message]
2012-08-20 15:04   ` Jakob Bornecrantz

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